Preliminary Requirements

Procedure

1. SUBTASK 72-45-20-220-146 Reference the Fits and Clearances of the HP Turbine Case and Vane Assembly at Location 1510

   1. Refer to Figure.

   2. Reference the interference at location 1510. If required use the data written as a note in TASK 72-45-21-200-001 and TASK 72-45-27-200-001-A00.

      Table 1. Fits and Clearances (all dimensions are in inches)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Select fit)	MORE THAN
      LOCATION 1510
      HP turbine case assembly
      ENGINE-HP TURBINE CASE ASSEMBLY (72-45-21,01-010), bore
      Stage 2 HPT support assembly
      ENGINE-STAGE 2 HPT SUPPORT ASSEMBLY (72-45-27,01-010), location
      Diameter
      HP turbine case assembly
      bore	28.583	Intf	28.583	Intf
      	28.577	0.002	28.577	0.002
      Stage 2 HPT support assembly	28.591	0.014	28.591	0.014
      location diameter	28.585	Intf	28.580	Intf

      Table 2. Fits and Clearances (all dimensions are in millimeters)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Select fit)	MORE THAN
      LOCATION 1510
      HP turbine case assembly
      ENGINE-HP TURBINE CASE ASSEMBLY (72-45-21,01-010), bore
      Stage 2 HPT support assembly
      ENGINE-STAGE 2 HPT SUPPORT ASSEMBLY (72-45-27,01-010), location
      diameter
      HP turbine case assembly
      bore	726.008	Intf	726.008	Intf
      	725.856	0.051	725.856	0.051
      Stage 2 HPT support assembly	726.211	0.356	726.211	0.356
      location diameter	726.059	Intf	725.932	Intf

2. SUBTASK 72-45-20-220-147 Reference Fits and Clearances of the HP Turbine Case and Vane Assembly at Location 1512

   1. Refer to Figure.

   2. Reference clearance at location 1512. If required use the data written as a note in TASK 72-45-00-200-001 and TASK 72-45-24-200-001.

      Table 3. Fits and Clearances (all dimensions are in inches)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Non-Select)	MORE THAN
      LOCATION 1512
      Instrumentation plug
      ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-140), location
      diameter
      Stage 2 HPT ring segment and
      vane cluster assembly
      (72-45-24,02-270 thru
      02-290), location
      diameter
      Instrumentation plug
      location diameter	0.498	Clear
      	0.503	0.001
      Stage 2 HPT ring segment	0.504	0.012
      and vane cluster assembly	0.510	Clear
      location diameter

      Table 4. Fits and Clearances (all dimensions are in millimeters)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Non-Select)	MORE THAN
      LOCATION 1512
      Instrumentation plug
      ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-140),
      location diameter
      Stage 2 HPT ring segment
      and vane cluster assembly
      (72-45-24,02-270 thru
      02-290), location
      diameter
      Instrumentation plug
      location diameter	12.649	Clear
      	12.776	0.025
      Stage 2 band segment and	12.802	0.305
      vane cluster assembly	12.954	Clear
      location diameter

3. SUBTASK 72-45-20-220-148 Reference Fits and Clearances of the HP Turbine Case and Vane Assembly at Location 1513

   1. Refer to Figure.

   2. Reference clearance at location 1513. If required use the data written as a note in TASK 72-45-00-200-001 and TASK 72-45-21-200-001.

      Table 5. Fits and Clearances (all dimensions are in inches)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Non-Select)	MORE THAN
      LOCATION 1513
      Instrumentation plug
      ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-140), location
      diameter
      HP turbine case assembly
      ENGINE-HP TURBINE CASE ASSEMBLY (72-45-21,01-010), location
      diameter
      Instrumentation plug
      location diameter	0.733	Clear
      	0.743	0.002
      HP turbine case assembly	0.745	0.022
      location diameter	0.755	Clear

      Table 6. Fits and Clearances (all dimensions are in millimeters)

      	NEW PART		WORN PART
      	DIMENSIONS		DIMENSIONS	REJECT IF
      PART IDENT	Size	Clearance	(Non-Select)	MORE THAN
      LOCATION 1513
      Instrumentation plug
      ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-140),
      location diameter
      HP turbine case assembly
      ENGINE-HP TURBINE CASE ASSEMBLY (72-45-21,01-010), location
      diameter
      Instrumentation plug
      location diameter	18.618	Clear
      	18.872	0.051
      HP turbine case assembly	18.923	0.559
      location diameter	19.177	Clear

4. SUBTASK 72-45-20-440-148 Put the Stage 2 HPT Ring Segment and Vane Cluster Assemblies on the Marking Plate

   1. Refer to Figure.

   2. Put the IAE 1P16177 Marking plate 1 off on a work bench.

   3. Put the 17 Stage 2 HPT ring segment and vane cluster assemblies ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24,02-050) and two Stage 2 HPT ring segment and vane cluster assemblies ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24,02-260) on the marking plate with the leading edge down.

      1. Position the two vane assemblies with the instrumentation holes on the plate at the two borescope locations identified on the plate.

         NOTE

         The mating number is marked on the outer diameter of the turbine case assembly. This is the same number as the detail case serial number.

      2. Mark the identification numbers 1 thru 19 and the mating number between the two rivets on the vane assemblies. Use the vibration peen method. Refer to SPM TASK 70-09-00-400-501.

         1. Find the vane assembly that is located on the top vertical center of the plate.

         2. Mark number 1 and the mating number on this vane assembly. Continue in a clockwise direction and mark the assemblies that remain.

         3. Remove all high metal.

      3. Put the vane assemblies on the work bench and remove the marking plate.

5. SUBTASK 72-45-20-440-149 Install the Seals and the Seal Assembly in the Stage 2 HPT Ring Segment and Vane Cluster Assembly Slots

   1. Refer to Figure.

   2. Install the seals and seal assembly by the procedures given below. Put the seals in the slots located on the right side of the 19 vane assemblies. Use CoMat 01-573 WAX BLEND, PARAFFIN to hold in position. Remove the wax that is not necessary at all locations.

      1. Install a seal assembly ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24, 02-190) into the slot with the longer leg parallel to the outer vane platform and the short leg in the slot adjacent to the anti-rotation lug on the vane.

      2. Install a seal ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24, 02-200) into the slot that remains on the outer vane platform.

      3. Install a seal ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24, 02-200) in between the clustered vanes.

      4. Install a seal ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24, 02-220) into the slot of the ring segment.

      5. Install a seal ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24, 02-180) into the slot of the outer vane platform with the short leg of the seal to the ring segment.

6. SUBTASK 72-45-20-440-150 Install the Stage 2 HPT Ring Segment and Vane Cluster Assemblies in the Fixture

   1. Refer to Figure.

   2. Install a standard two cable sling to the IAE 1P16026 Assembly fixture 1 off. Attach the sling to a hoist and position the fixture on a work bench with the legs down. Remove the sling and hoist.

   3. Install the Stage 2 HPT ring segment and vane cluster assemblies in the fixture.

      1. Install the vane assembly, identified as number one, in the fixture at the 12 o'clock position with the trailing edge of the vane down.

      2. Align and center the anti-rotation lug on the right vane of the vane assembly with the top vertical centerline that is marked on the fixture.

      3. Install the vane assembly, identified as number two in a clockwise direction when you look down from the rear of the fixture.

         1. Carefully align the seals in the number two vane with the seal slots in the number one vane and engage the seals. Make sure no damage occurs to the seals.

            NOTE

            1. When you install the vane assemblies, the adjacent vane assemblies can be moved out to engage the seals correctly.

            2. Make sure the two vane assemblies with the instrumentation holes are at the location on the fixture that is identified as borescope.

      4. Install the vane assemblies that remain, by number, in a clockwise direction by the procedure given in Step.

      5. After the vane assemblies are assembled on the ring, carefully move the vanes in to touch the inner diameter of the fixture.

         1. Make sure no damage occurs to the seals.

         2. Make sure all the seals are installed in the vane assemblies.

7. SUBTASK 72-45-20-440-151 Install the HP Turbine Case Assembly

   1. Refer to Figure.

   2. Install the gasket ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24,02-020) in the outer groove of the Stage 2 HPT ring segment and vane cluster assemblies.

   3. Install the IAE 1P16173 Lift sling 1 off to the front flange of the turbine case assembly (flange with the dowel pin) and attach with the washers and nuts.

   4. Attach the sling to a hoist.

   5. Lift and position the case assembly over the fixture and vane assemblies.

   6. Align the dowel pin on the rear flange of the case assembly with the dowel pin hole in the fixture.

   7. Install the turbine case assembly on the fixture.

      1. Carefully lower the case assembly down on the fixture and assembled vane assemblies and align the anti-rotation lugs on the vanes with the slots in the case.

      2. Make sure the two borescope holes in the case assembly align with the two instrumentation holes in the vane assemblies.

      3. Install the four plates in position on the rear of the front flange of the case.

      4. Install and tighten the eight retaining bolts and nuts. Torque the nuts to 65 to 75 lbfin (7.344 to 8.474 Nm).

   8. Remove the nuts and washers which attach the sling to the case. Remove the sling.

8. SUBTASK 72-45-20-440-152 Identify the Stage 1 HPT Band Segments, Stage 1 HPT Duct Segment Assemblies and Stage 1 HPT Duct Supports

   1. Refer to Figure and Figure.

   2. Install the gasket ENGINE-STAGE 2 HPT RING SEGMENT AND VANE CLUSTER (72-45-24,02-010) in the inner groove of the Stage 2 ring segment and vane cluster assemblies, Figure.

   3. Install the Stage 1 HPT band segments.

      1. Install the Stage 1 HPT band segment ENGINE-STAGE 1 HPT DUCT SEGMENT (72-45-23,01-040) in the groove of the vane assemblies with the large outer diameter down.

      2. Align and position the center of the band segment with the first bolthole to the right side of the top vertical centerline and align with the antirotation lug on the vane assembly.

      3. Install the two Stage 1 HPT band segments ENGINE-STAGE 1 HPT DUCT SEGMENT (72-45-23,01-020) in the groove of the vane assemblies. Make sure the band segments do not go over each other.

   4. Install the Stage 1 HPT duct segment assemblies ENGINE-STAGE 1 HPT DUCT SEGMENT (72-45-23,01-060).

      1. Install a duct segment in the groove of the vane assembly on the inner diameter of the band segment.

      2. Position this duct segment to the first bolthole to the right side of the top vertical centerline.

      3. Install a duct segment in a clockwise direction adjacent to the first duct segment.

      4. Install one IAE 1P17771 Orientation adapter 19 off on the inner flange of the case assembly adjacent to the two installed duct segments.

         NOTE

         The orientation adapter shows the relative position of the duct segments to the bolthole in the case.

         1. Put the locator of the adapter in the bolthole.

         2. If necessary, align the two installed duct segments with the adpater.

      5. Install the duct segments that remain in a clockwise direction by the procedures given in Step.

      6. Install and position a 0.018 in. (0.46 mm) feeler gage in the lower one-quarter area between each of the duct segments. This will keep the minimum requirement of Dimension C.

      7. Remove the 19 adapters.

   5. Install the Stage 1 HPT duct seal ENGINE-STAGE 1 HPT DUCT SEGMENT (72-45-23, 01-080) between each of the duct segments.

   6. Install a Stage 1 HPT duct support seal (75-45-22, 01-060) in the recess slot located on the right side of each duct support. Put the short side of the seal in the slot, Figure.

      1. Use CoMat 01-573 WAX BLEND, PARAFFIN to hold the seal in position.

      2. Remove the wax that is not necessary.

   7. Install the Stage 1 HPT duct supports ENGINE-STAGE 1 HPT DUCT SUPPORT SET (72-45-22, 01-010).

      1. Apply CoMat 10-094 ANTI-SEIZE COMPOUND, PURE Ni-SPECIAL or CoMat 10-029 CORROSION PREVENTIVESLUSHING OIL to the threads of the bolts ENGINE-STAGE 1 HPT DUCT SUPPORT SET (72-45-22, 01-100).

      2. Wipe off excess paste.

      3. Install a duct support in the inner flange of the case assembly and position the support at the top vertical centerline.

         1. Align the counterbore hole in the support with the hole in the inner diameter flange of the case assembly located to the right side of the top vertical centerline.

         2. Engage the lug of the first two duct segments and the band segment in the slot of the support.

         3. Engage the support outer diameter lug in the inner flange slot of the case assembly.

         4. If necessary, hit the support lightly on the flat surface to seat the support.

         5. Install the bolt in the support finger tight.

      4. Install the duct supports that remain in a clockwise direction by the procedures given in Step.

         1. Align and carefully engage the Stage 1 HPT duct support seal on the last installed support with the seal slot on the support you install.

      5. Torque the bolts 180 degrees apart to 62 to 72 lbfin (7.005 to 8.135 Nm). Use the IAE 1P17772 Socket 1 off.

         NOTE

         This is the distance from the front flange of the case assembly to inner diameter front surface of each Stage 1 duct support.

      6. Measure the distance at Dimension D.

         1. Measure the distance at Dimension D at 19 locations. Use the IAE 1P17756 Parallel measuring bar 1 off and a depth micrometer.

         2. Subtract the depth gage measurement from the dimension given on the parallel measuring bar.

         3. The distance at all locations, must be 2.296 to 2.320 in. (58.32 to 58.93 mm).

      7. Remove all the feeler gages.

      8. Check the clearance at Dimension C. This dimension must be 0.016 in. (0.41 mm) minimum at 38 positions.

9. SUBTASK 72-45-20-440-153 Turn the HP Turbine Case Assembly

   1. Refer to Figure.

   2. Attach a standard two cable sling to the lift adapters on the fixture and to a hoist.

   3. Lift the case and fixture and turn 180 degrees and position the work bench with the front flange of the case down.

   4. Remove the retaining nuts, bolts and the plates which attach the case assembly to the fixture.

   5. Remove the fixture from the case assembly. Put the fixture in storage and remove the sling and hoist.

10. SUBTASK 72-45-20-440-154 Install the Stage 2 HPT Band Segment Assemblies and the Stage 2 Duct Segments in the Turbine Case Assembly

    1. Refer to Figure and Figure.

    2. Install the gasket ENGINE-STAGE 2 HPT DUCT SEGMENT (72-45-25, 01-010) in the inner diameter groove of the Stage 2 ring segment and vane cluster assemblies, Figure.

    3. Install the Stage 2 HPT band segment assemblies.

       1. Install the Stage 2 HPT band segment assembly ENGINE-STAGE 2 HPT DUCT SEGMENT (72-45-25, 01-040) in the vane assembly groove with the cooling air holes down.

       2. Align the center of the band segment at the 12 o'clock position which is located at approximately 180 degrees from the dowel pin on the case rear flange.

       3. Install the two Stage 2 HPT band segment assemblies ENGINE-STAGE 2 HPT DUCT SEGMENT (72-45-25, 01-020) in the vane assembly groove in a clockwise direction. Position the tab end of the band segment to the outer side of the adjacent segments.

    4. Install the stage 2 HPT duct segments.

       1. Install a stage 2 HPT duct seal ENGINE-STAGE 2 HPT DUCT SEGMENT (72-45-25, 01-080) in the recess slot on the right side of each duct segment. Position the short 90 degree end of the seal in the slot of the duct segment lug.

          1. Use CoMat 01-573 WAX BLEND, PARAFFIN to hold the seal in position.

          2. Remove the wax that is not necessary.

       2. Install the duct segment in the vane assembly groove and on the inner side of the band segment. Align the center of the duct segment with the center of the first band segment at the 12 o'clock position.

          NOTE

          The convex side of the inner diameter of the band segment must align with the cavity on the outer diameter of the duct segment.

          1. Lift the band segment up and engage inner diameter of the band segment in to cavity on the outer diameter of the duct segment.

       3. Install all the duct segments that remain in a clockwise direction in the vane assembly groove.

          1. Align and carefully engage the stage 2 HPT duct seal on the last installed duct segment with the seal slot on the duct segment you install.

       4. Install and position a 0.020 in. (0.51 mm) feeler gage in the lower one-quarter area between each of the duct segments. This will keep the minimum requirement of Dimension E.

    5. Install the IAE 1P17012 Orientation ring 1 off, Figure.

       1. Install the ring to the rear flange of the turbine case, over the band segments and duct segments while you align the dowel pin on the case flange with the hole in the ring.

       2. Also align the slots in the duct segments with the pins in the ring.

       3. When all the parts have been correctly aligned and seated, attach the fixture to the rear flange with the bolts and nuts.

    6. Install the gasket ENGINE-SECOND STAGE HPT DUCT SUPPORT (72-45-26,01-010) in the slot of the Stage 2 HPT duct segment assemblies.

11. SUBTASK 72-45-20-440-155 Assemble the Stage 2 HPT Seal, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Support Assembly in the Seating Fixture

    1. Refer to Figure.

    2. Attach a standard three cable sling to the three lifting eyes on the IAE 1P17016 Seating fixture 1 off.

    3. Attached the sling to a hoist and lift up to position the fixture on the work bench with the base down. Remove the sling.

    4. Prepare the seating fixture.

       1. Loosen the 19 jackscrews until the press pins will not touch the engine parts.

       2. Remove the 38 cap screws that attach the brackets to the base and remove the brackets.

       3. Loosen the 19 retainer cap screws, lift the retainers up, and pull the seal supports out.

    5. Install the Stage 2 HPT seal ENGINE-STAGE 2 HPT SUPPORT ASSEMBLY (72-45-27, 01-060) in the inner diameter of the fixture with the outer diameter of the seal down.

    6. Install the Stage 2 HPT support assembly ENGINE-STAGE 2 HPT SUPPORT ASSEMBLY (72-45-27, 01-010) with the tapered outer diameter down and align the dowel pin in the fixture with the dowel hole in the support assembly flange.

    7. Install the Stage 2 HPT duct support assemblies ENGINE-SECOND STAGE HPT DUCT SUPPORT (72-45-26, 01-020).

       1. Install a Stage 2 HPT duct support seal ENGINE-SECOND STAGE HPT DUCT SUPPORT (72-45-26, 01-060) in the slot on the right side of each duct support assembly. Engage the short side of the seal in the recess slot.

          1. Use CoMat 01-573 WAX BLEND, PARAFFIN to hold the seal in position.

          2. Remove the wax that is not necessary.

       2. Install the duct support assembly to the left (counterclockwise) of the 12 o'clock position mark on the fixture base.

       3. Engage the lug of the duct support assembly in the slot of the support assembly.

       4. Engage the inner diameter of the seal in the rear slot of the duct support assembly.

       5. Engage the outer diameter of the seal on the location flat of the fixture seal support.

       6. Push the seal support in and move the retainer down into the groove of the seal support and tighten the cap screw.

       7. Do not seat the duct support assembly at this time.

       8. Install the duct support assemblies that remain in a clockwise direction by the procedures given in Step to Step.

          1. Align and carefully engage the Stage 2 HPT duct support seal on the last installed duct support assembly with the seal slot on the duct support assembly you install.

       9. Install the brackets on the fixture base.

          1. Install the bracket at the first duct segment assembly and align the bracket dowel hole with the dowel pin in the base.

          2. Attach the bracket to the base with the two cap screws. Torque the screws to 65 to 75 lbfin (7.344 to 8.474 Nm).

          3. Do not seat the duct support assembly at this time.

          4. Install the brackets that remain in a clockwise direction by the procedures given above.

       10. Seat the Stage 2 HPT duct support assemblies in the stage 2 HPT support assembly.

           NOTE

           The duct support assemblies must be seated equally.

           1. Turn the jackscrew on the bracket at the first duct support assembly, clockwise, sufficiently to engage the press pin on the outer diameter lug of the duct support assembly.

           2. Continue to engage the press pins that remain, in a clockwise direction.

           3. Start at the first duct support and turn the jackscrew in a clockwise direction, one quarter of a turn. Continue in a clockwise direction and tighten the jack screws that remain.

           4. Do Step again until all the duct support assemblies are seated in the duct support assembly.

       11. Remove all the brackets on the seating fixture.

           1. Loosen the 19 jackscrews until the press pins will not touch the engine parts.

           2. Carefully remove the cap screws and brackets from the base.

              NOTE

              Metal that is removed from the Stage 2 HPT duct support assemblies when the part is assembled, must be removed.

       12. Carefully remove the assembled Stage 2 HPT support assembly, Stage 2 duct support assemblies and the Stage 2 HPT seal from the fixture and put them on the work bench.

       13. Install the 19 brackets to the fixture base and attach them in place with the cap screws, hand tight.

       14. Attach a standard three cable sling to the three lifting eyes on the seating fixture.

       15. Attached the sling to a hoist and put the fixture in storage.

12. SUBTASK 72-45-20-440-156 Install the Assembled Stage 2 HPT Seal, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Support Assembly

    1. Refer to Figure, Figure and Figure.

    2. Remove the nuts and screws that attach the orientation ring to the rear flange of the turbine case assembly, Figure.

    3. Carefully remove the orientation ring from the turbine case and put in storage.

    4. Install the assembled Stage 2 HPT seal, Stage 2 duct support assemblies and Stage 2 HPT support assembly in the IAE 1P16013 Fixture 1 off, Figure.

       1. Attach a standard two cable sling to the fixture lifting spools. Attach a hoist to the sling, lift up and position the legs of the fixture on the work bench. Remove the sling and hoist.

       2. Loosen the knurled knobs on the fixture.

       3. Pull the clamps on the fixture out to have a clearance between the tool and the assembled parts.

       4. Lift the assembled Stage 2 HPT support assembly, Stage 2 HPT duct support assemblies and Stage 2 HPT seal and put it in the fixture.

       5. Position the offset hole in the support assembly flange with the arrow on the side of the fixture.

       6. Hold the parts in the fixture with the clamps.

          1. Loosen the knurled knobs and push the clamps in to engage the parts through the holes in the fixture.

          2. Tighten the knurled knobs.

    5. Install the fixture and assembled seal, duct support and support on the rear flange of the turbine case assembly, Figure.

       1. Attach a standard two cable sling to the fixture lifting spools. Attach a hoist to the sling, lift up and turn the fixture 180 degrees to position the fixture with the legs up.

       2. Position the fixture over the rear flange of the turbine case assembly.

       3. Align the offset hole in the Stage 2 support assembly with the dowel pin in the turbine case flange.

       4. Carefully lower the fixture until the parts fully engage. If necessary, adjust the Stage 2 HPT duct segments radially to engage the groove in the Stage 2 ring segment and vane cluster assemblies.

       5. Loosen the knurled knobs and pull the clamps out to have clearance between the tool and parts.

       6. Carefully lift the fixture with the hoist and put in storage. Remove the sling and hoist.

    6. Attach the Stage 2 HPT support assembly to the turbine case assembly flange.

       1. Locate the first chamfered hole on the support assembly to the right of the dowel pin.

       2. Put a work bolt and washer (washer under the bolt head) in the second flange bolthole to the right of the chamfered hole. Attach a washer and work nut to the bolt.

       3. Continue to the right and put a work bolt, washers and nut in every fourth flange bolthole.

       4. 

          CAUTION

          DO NOT HIT THE SUPPORT WHEN YOU SEAT IT.

          Tighten the work bolts equally, 180 degrees apart, to seat the support assembly.

          NOTE

          The Stage 1 HPT seal must be free to turn in the groove of the duct support assemblies.

       5. Torque the work bolt equally, 180 degrees apart, to 85 to 95 lbfin (9.604 to 10.734 Nm.).

       6. Apply CoMat 10-094 ANTI-SEIZE COMPOUND, PURE Ni-SPECIAL or CoMat 10-129 ANTI-SEIZE PASTE to the threads of the eight screws ENGINE-STAGE 2 HPT SUPPORT ASSEMBLY (72-45-27,01-040).

       7. Wipe off excess paste.

       8. Install the screws in the eight chamfered holes in the support assembly. Torque the screws to 23 to 26 lbfin (2.599 to 2.938 Nm).

          NOTE

          This is the distance from the rear surface of the Stage 2 support assembly flange to each of the rear surfaces of the Stage 2 HPT duct support assemblies. This will make sure all the parts are fully engaged.

    7. Measure the distance at Dimension F, Figure.

       1. Measure the distance at Dimension F at 19 locations. Use the IAE 1P17756 Parallel measuring bar 1 off and a depth micrometer.

       2. Subtract the depth gage measurement from the dimension given on the parallel measuring bar.

       3. The distance at all locations, must be 1.341 to 1.370 in. (34.06 to 34.80 mm).

    8. Remove all the work bolts, washers, and nuts from the rear turbine case flange.

    9. Examine the clearance at Dimension E between the 38 Stage 1 duct segments, Figure.

       1. Remove the feeler gages from the duct segments.

       2. Check the clearance at Dimension E. This dimension must be 0.018 in. (0.46 mm) minimum.

13. SUBTASK 72-45-20-440-157 Install the Instrumentation Plugs

    1. Refer to Figure and Figure.

    2. Install the gaskets ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-120) in the two borescope bosses on the turbine case assembly.

    3. Install the instrumentation plugs ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-140) in the two borescope bosses.

    4. Install the two retaining bolts ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-160) that attach the instrumentation plug at each location.

    5. Torque the bolts to 65 to 85 lbfin (7.344 to 9.604 Nm). Safety the bolts with CoMat 02-141 LOCKWIRE.

14. SUBTASK 72-45-20-440-158 Install the HPT Rotor and Stator Identification Plate

    1. Refer to Figure.

    2. If necessary, install the HPT rotor and stator identification plate ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-240) to the bracket on the front flange of the turbine case assembly.

       1. Install the bolts ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-220) through the plate and bracket and attach them with the nuts ENGINE-HP TURBINE ROTOR AND STATOR ASSEMBLY (72-45-00,01-200).

       2. Torque the bolts to 36 to 40 lbfin (4.067 to 4.519 Nm).

15. SUBTASK 72-45-20-440-159 Put the HP Turbine Case and Vane Assembly on a Pallet

    1. Refer to Figure.

    2. Install the IAE 1P16173 Lift sling 1 off to the rear flange of the turbine case assembly (flange with the dowel pin) and attach with the washers and nuts.

    3. Attach the sling to a hoist.

    4. Lift and position the case and vane assembly on a pallet.

    5. Remove the sling.

    6. Install the IAE 1P17758 Protective cover 1 off on the rear flange of the case and vane assembly.

Figure: HP Turbine Case and Vane Assembly Fits and Clearances

HP Turbine Case and Vane Assembly Fits and Clearances



Figure: Stage 2 HPT Ring Segment and Vane Cluster Assembly Identification

Stage 2 HPT Ring Segment and Vane Cluster Assembly Identification



Figure: Install the Seals and Seal Assembly in the Ring Segment and Vane Cluster Assembly

Install the Seals and Seal Assembly in the Ring Segment and Vane Cluster Assembly



Figure: Stage 2 HPT Ring Segment and Vane Cluster Assemblies in the Fixture

Stage 2 HPT Ring Segment and Vane Cluster Assemblies in the Fixture



Figure: Install the HP Turbine Case Assembly

Install the HP Turbine Case Assembly



Figure: Stage 1 HPT Band Segments Identification

Stage 1 HPT Band Segments Identification



Figure: Stage 1 HPT Duct Segment Assemblies Identification

Stage 1 HPT Duct Segment Assemblies Identification



Figure: Stage 1 HPT Duct Supports Identification

Stage 1 HPT Duct Supports Identification



Figure: Install the Stage 1 HPT Duct Segment Assemblies and the Stage 1 HPT Band Segments

Install the Stage 1 HPT Duct Segment Assemblies and the Stage 1 HPT Band Segments



Figure: Install the Stage 1 HPT Duct Supports

Install the Stage 1 HPT Duct Supports



Figure: Remove the IAE 1P16026 Assembly Fixture

Remove the IAE 1P16026 Assembly Fixture



Figure: Install the Stage 2 HPT Duct Segments and the Stage 2 HPT Band Segment Assemblies

Install the Stage 2 HPT Duct Segments and the Stage 2 HPT Band Segment Assemblies



Figure: Stage 2 HPT Band Segment and Stage 2 HPT Duct Segments

Stage 2 HPT Band Segment and Stage 2 HPT Duct Segments



Figure: Assemble the Stage 2 HPT Duct Support Assembly, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Seal

Assemble the Stage 2 HPT Duct Support Assembly, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Seal



Figure: Stage 2 HPT Support Assembly, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Seal in the Fixture

Stage 2 HPT Support Assembly, Stage 2 HPT Duct Support Assemblies and Stage 2 HPT Seal in the Fixture



Figure: Stage 2 HPT Support Assembly, Stage 2 HPT Duct Support Assembly and Stage 2 HPT Seal Installation

Stage 2 HPT Support Assembly, Stage 2 HPT Duct Support Assembly and Stage 2 HPT Seal Installation



Figure: Install the Instrumentation Plugs

Install the Instrumentation Plugs



Figure: HPT Rotor and Stator Identification Plate Installation

HPT Rotor and Stator Identification Plate Installation



Figure: Put the HP Turbine Case and Vane Assembly on a Pallet

Put the HP Turbine Case and Vane Assembly on a Pallet